Room Shannon, 342, level -3
2.00pm
Speaker: Aly El Gamal
Title: Information Theory of Cloud-based Cooperative Interference Management
Abstract: We investigate in this talk the value of cooperative communication in large cloud-based cellular networks. A central controller is assumed to have access to global network topology information as well as fading statistics. The controller can then make decisions for backhaul resource assignments and cell associations to maximize the overall rate. We show that because of path loss, dividing the network into small subnetworks, and confining the assignment of a message to its local subnetwork is optimal. Further, by allowing for a flexible assignment of backhaul resources across different users in the same time/frequency slot, simple zero-forcing transmit beamforming can lead to significant rate gains that scale with both the transmit power and the size of the network, without incurring extra overall load on the backhaul. We then extend this work to study dynamic interference networks where deep fading conditions are captured by assuming probabilistic link erasures. It is shown that the role of cooperation shifts from interference management to coverage, as the link erasure probability increase.
Bio: Aly El Gamal is an Assistant Professor in the ECE Department at Purdue University. His research interests include information theory and artificial intelligence, with applications to wireless networks.
Dr. El Gamal received the M.S. degree in Mathematics and the Ph.D.
degree in Electrical and Computer Engineering from the University of Illinois at Urbana-Champaign in 2013 and 2014, respectively. Among the awards that he has received are the Huawei Innovation Research Program (HIRP) OPEN award in 2015, and the DARPA contract award for the Spectrum Collaboration Challenge (SC2) in 2016.